engine AUDI A4 1999 B5 / 1.G AWM Engine Readiness Code User Guide
[x] Cancel search | Manufacturer: AUDI, Model Year: 1999, Model line: A4, Model: AUDI A4 1999 B5 / 1.GPages: 43, PDF Size: 0.14 MB
Page 26 of 43
01-97
Display fields
1 2 3 4
Display group 034: Oxygen sensor aging diagnostic, oxygen sensor before catalytic converter (bank 1)
Display xxxx/min
xxx C
x.x
---
Indicated Engine speed
(RPM) Exhaust
temperature Dynamic
factor Diagnostic condition
Functional
range Test OFF
Test ON
B1-S2 OK
B1-S2 not OK
Specified
value 2600 RPM larger than 350
C
0.5 to 2.5 B1-S2 OK
Note
If "B1-S1 not OK" is displayed: Check DTC
memory Page 01
-12
.
If specified value "B1-S1 OK" is obtained:
- Perform next work step.
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Page 27 of 43
01-98
Work step 7: Diagnostic of operational
readiness of oxygen sensor behind catalytic
converter
Test requirement:
Engine continues to run at 2600 RPM.
Display on VAS5051:
-
Press button 2 times to change into display group 036.- Check specified value in display field -2-.
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Page 29 of 43
01-100
Work step 8: Diagnostic of oxygen sensor
control system
Test requirement:
Engine continues to run at 2600 RPM.
Display on VAS5051:
-
Press button to change into display group 037.- Check specified value in display field -4-.
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Page 31 of 43
01-102
Work step 9: Diagnostic of oxygen sensor
aging behind catalytic converter
Test requirement:
Engine continues to run at 2600 RPM.
Display on VAS5051:
-
Click on - button
Display on VAS5051:
1 - Enter display group Max. input value = 255
- Select function "043" in button field -2- for "display group number 043"
and press Q button to confirm input.
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Page 33 of 43
01-104
Display fields
1 2 3 4
Display group 043: Oxygen sensor aging diagnostic, oxygen sensor behind catalytic converter (bank 1)
Display xxxx/min
xxx C
x.xxx V
---
Indicated Engine speed
(RPM) Exhaust
temperature Oxygen sensor voltage
Bank 2, sensor 1 Diagnostic condition
Functional
range Test OFF
Test ON
B1-S2 OK
B1-S2 not OK
Specified
value 2600 RPM larger than 350
C
0.100 to 0.950 volts B1-S2 OK
Note
If "B1-S2 not OK" is displayed: Check
DTC memory Page 01
-12
If specified value B1-S2 OK" is obtained:
- Perform next work step.
Pa
ge 33 of 43 Readiness code11/22/2002 htt
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Page 34 of 43
01-105
Work step 10: Diagnostic of catalytic
converter
Test requirement:
Engine continues to run at 2600 RPM.
Display on VAS5051:
Note:
Catalytic converter diagnostic lasts approx. 60 seconds. -
Press button 3 times to change into display group 046.- Check specified values in display fields -2- and -4-.
Pa
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Page 35 of 43
01-106
Display fields
1 2 3 4
Display group 046: Diagnostic of catalytic converter (bank 1)
Display xxxx/min
xxx C
x.xx
---
Indicated Engine
speed
(RPM) Exhaust temperature Measurement
Catalytic
converter -
conversion Diagnostic condition
Functional
range 0 to 8 Test OFF
Test ON
Cat B1 OK
Cat B1 not OK
Specified
value 2600 RPM
550 to 700 C
Larger than 1.0 Cat B1 OK
Note
As long as the exhaust temperature
is not within the specified range, the
test will not be initiated. If necessary,
increase or decrease RPM
If "Cat B1 not OK" is displayed:
Check DTC memory Page 01
-
12
. If no DTCs are stored,
replace catalytic converter.
If specified value "Cat B1 OK" is obtained:
- Perform next work step.
Pa
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Page 36 of 43
01-107
Work step 11: Diagnostic of tank ventilation
valve
- Remove the VAG1788/10 RPM adjuster and
leave engine running at idle.
Test requirement:
Engine running at idle:
Display on VAS5051:
-
Click on - button
Display on VAS5051:
1 - Enter display group Max. input value = 255
- Select function "070" in button field -2- for "display group number 070"
and press Q button to confirm input.
Pa
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Page 40 of 43
01-110
Work step 12: Diagnostic of Secondary Air
Injection (AIR) system
Test requirement:
Engine running at idle:
Display on VAS5051:
-
Click on - button
Display on VAS5051:
1 - Enter display group Max. input value = 255
- Select function "077" in button field -2- for "display group number 077"
and press Q button to confirm input.
Pa
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Page 42 of 43
01-112
Display fields
1 2 3 4
Display group 077: Secondary Air Injection (AIR) system diagnostic (Bank 1)
Display xxxx/min xx.x
g/s xx %
---
Indicated Engine speed
(RPM) Air
mass Relative air mass bank 1,
Secondary Air Injection (AIR)
system Diagnostic condition
Functional
range
Test OFF
Test ON
System OK
System not OK
Aborted
Specified
value FWD: 740 to
860 RPM
AWD: 760 to
880 RPM 2 to 5
g/s more than -20 % System OK
Note
If "System not OK" is displayed:
Check DTC memory Page 01
-12
If specified value "Syst. OK" is obtained:
Pa
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